Sunflower stem, light micrograph
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Sunflower stem, light micrograph
Sunflower stem. Light micrograph of a section through a young stem from a sunflower (Helianthus annuus), showing the tissues within one of the many vascular bundles. From left to right: collenchyma tissue (yellow and violet) for flexible support; cortex of parenchyma tissue (red and blue); long thick-walled supportive cells (yellow and green); long thin-walled cells of the phloem sieve tubes; companion cells (red and blue); xylem vessels: annual, spiral, and pitted vessels that carry water and minerals to the stem (yellow and light blue); and lastly the pith, composed of parenchyma tissue (deep blue). Magnification: x37, when printed 10 centimetres wide
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 6340307
© DR KEITH WHEELER/SCIENCE PHOTO LIBRARY
Bundles Cell Biology Companion Cells Cortex Cytological Cytology Dicot Dicots Dicotyledon Dicotyledons Helianthus Annuus Histological Histology Microscopy Parenchyma Phloem Pith Sieve Tube Stain Stained Stem Structural Structures Sun Flower Support Thick Walled Thin Walled Tissue Tubes Vascular Bundle Vessels Xylem Vessel Young Cells Light Micrograph Light Microscope Section Sectioned
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